CARBOHYDRATES
1. What is function of carbohydrates in living organisms? (3 marks)
2. Compare the source of energy in carbohydrates and fats? (p.91) (2 marks)
3. What elements are found in carbohydrates? (3 marks)
4. Distinguish between monosaccharide, disaccharide and polysaccharide. (3 marks)
5. Give at least one example of carbohydrates, which belong to the above groups and state
their function. (3 marks)
6. EXT: Compare the structure of starch and glycogen – in terms of main building units, chain
shape, bonds (% marks)
PROTEINS
1. What is function of proteins in living organisms? (3 marks)
2. Explain the statement : proteins are not primary source of energy? (2 marks)
3. What element is found in proteins and is not found in carbohydrates and fats? (1 marks)
4. Describe the role of some important proteins: chlorophyll, enzyme, insulin, antibodies? (4
marks)
5. What are building units of proteins? Why are some of them called essential? (2 marks)
6. EXT: Describe the structure of building units of proteins. (5 marks)
FATS
1. What is function of fats in living organisms? (3 marks)
2. Compare the source of energy in carbohydrates and fats? (p.91) (2 marks)
3. What elements are found in fats? (3 marks)
4. Distinguish between saturated and unsaturated fats. (3 marks)
5. What are building units of 1 molecule of fat? (2 marks)
6. EXT: Describe the role of fats (lipids) in the membranes of cells. Include the role of
cholesterol. (5 marks)